Figure 2

Disease severity in ferrets when challenged with wild-type A/Viet Nam/1203/2004 (H5N1). (A) Percent body weight. (B) Temperature change. (C) Cumulative symptom scores. (D) Viral load in the nasal cavity. (E) Replication of virus in extrapulmonary tissues after infection. Ferret 498 is indicated by ▲. *p < 0.05, **p < 0.01, and ***p < 0.001 by one-way ANOVA.